Four planets will be widely visible to the naked eye through part of February, but calling them a 'planetary alignment' may not be the full picture.

The four-planet lineup that began in January concludes by mid- to late February, as Saturn sinks increasingly lower in the sky each night after sunset, according to NASA. While Mercury will briefly join Saturn later in February in the post-sunset glow, both planets will be too low and faint for most observers to spot.

Although the occurrence climaxed on Jan. 21 with a conjunction—close alignment—of Saturn and Mercury, the planetary parade will culminate on Feb. 28 when all the planets line up. This month’s parade with all seven planets lining up will be the last one for the next 15 years when Saturn and Jupiter are back on the same side of the sky in 2040.

According to Star Walk, "the next time seven planets will align (after Feb. 28, 2025) is likely to be around late 2028." "An asteroid this size impacts Earth on average every few thousand years and could cause severe damage to a local region," the European Space Agency said.